File Coverage

src/ssl/ssl_server_full_rsa.c

Criterion	Covered	Total	%
statement	18	18	100.0
branch	2	2	100.0
condition			n/a
subroutine			n/a
pod			n/a
total	20	20	100.0

line	stmt	bran	code
1			/*
2			* Copyright (c) 2016 Thomas Pornin
3			*
4			* Permission is hereby granted, free of charge, to any person obtaining
5			* a copy of this software and associated documentation files (the
6			* "Software"), to deal in the Software without restriction, including
7			* without limitation the rights to use, copy, modify, merge, publish,
8			* distribute, sublicense, and/or sell copies of the Software, and to
9			* permit persons to whom the Software is furnished to do so, subject to
10			* the following conditions:
11			*
12			* The above copyright notice and this permission notice shall be
13			* included in all copies or substantial portions of the Software.
14			*
15			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16			* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17			* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18			* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19			* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20			* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21			* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22			* SOFTWARE.
23			*/
24
25			#include "inner.h"
26
27			/* see bearssl_ssl.h */
28			void
29	1		br_ssl_server_init_full_rsa(br_ssl_server_context *cc,
30			const br_x509_certificate *chain, size_t chain_len,
31			const br_rsa_private_key *sk)
32			{
33			/*
34			* The "full" profile supports all implemented cipher suites.
35			*
36			* Rationale for suite order, from most important to least
37			* important rule:
38			*
39			* -- Don't use 3DES if AES is available.
40			* -- Try to have Forward Secrecy (ECDHE suite) if possible.
41			* -- ChaCha20+Poly1305 is better than AES/GCM (faster, smaller).
42			* -- GCM is better than CBC.
43			* -- AES-128 is preferred over AES-256 (AES-128 is already
44			* strong enough, and AES-256 is 40% more expensive).
45			*/
46			static const uint16_t suites[] = {
47			BR_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
48			BR_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
49			BR_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
50			BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
51			BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
52			BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
53			BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
54			BR_TLS_RSA_WITH_AES_128_GCM_SHA256,
55			BR_TLS_RSA_WITH_AES_256_GCM_SHA384,
56			BR_TLS_RSA_WITH_AES_128_CCM,
57			BR_TLS_RSA_WITH_AES_256_CCM,
58			BR_TLS_RSA_WITH_AES_128_CCM_8,
59			BR_TLS_RSA_WITH_AES_256_CCM_8,
60			BR_TLS_RSA_WITH_AES_128_CBC_SHA256,
61			BR_TLS_RSA_WITH_AES_256_CBC_SHA256,
62			BR_TLS_RSA_WITH_AES_128_CBC_SHA,
63			BR_TLS_RSA_WITH_AES_256_CBC_SHA,
64			BR_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
65			BR_TLS_RSA_WITH_3DES_EDE_CBC_SHA
66			};
67
68			/*
69			* All hash functions are activated.
70			* Note: the X.509 validation engine will nonetheless refuse to
71			* validate signatures that use MD5 as hash function.
72			*/
73			static const br_hash_class *hashes[] = {
74			&br_md5_vtable,
75			&br_sha1_vtable,
76			&br_sha224_vtable,
77			&br_sha256_vtable,
78			&br_sha384_vtable,
79			&br_sha512_vtable
80			};
81
82			int id;
83
84			/*
85			* Reset server context and set supported versions from TLS-1.0
86			* to TLS-1.2 (inclusive).
87			*/
88	1		br_ssl_server_zero(cc);
89	1		br_ssl_engine_set_versions(&cc->eng, BR_TLS10, BR_TLS12);
90
91			/*
92			* Set suites and elliptic curve implementation (for ECDHE).
93			*/
94	1		br_ssl_engine_set_suites(&cc->eng, suites,
95			(sizeof suites) / (sizeof suites[0]));
96	1		br_ssl_engine_set_default_ec(&cc->eng);
97
98			/*
99			* Set the "server policy": handler for the certificate chain
100			* and private key operations.
101			*/
102	1		br_ssl_server_set_single_rsa(cc, chain, chain_len, sk,
103			BR_KEYTYPE_KEYX \| BR_KEYTYPE_SIGN,
104			br_rsa_private_get_default(),
105			br_rsa_pkcs1_sign_get_default());
106
107			/*
108			* Set supported hash functions.
109			*/
110	7	100	for (id = br_md5_ID; id <= br_sha512_ID; id ++) {
111			const br_hash_class *hc;
112
113	6		hc = hashes[id - 1];
114	6		br_ssl_engine_set_hash(&cc->eng, id, hc);
115			}
116
117			/*
118			* Set the PRF implementations.
119			*/
120	1		br_ssl_engine_set_prf10(&cc->eng, &br_tls10_prf);
121	1		br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf);
122	1		br_ssl_engine_set_prf_sha384(&cc->eng, &br_tls12_sha384_prf);
123
124			/*
125			* Symmetric encryption.
126			*/
127	1		br_ssl_engine_set_default_aes_cbc(&cc->eng);
128	1		br_ssl_engine_set_default_aes_ccm(&cc->eng);
129	1		br_ssl_engine_set_default_aes_gcm(&cc->eng);
130	1		br_ssl_engine_set_default_des_cbc(&cc->eng);
131	1		br_ssl_engine_set_default_chapol(&cc->eng);
132	1		}